#640FF1
Closest named color: Purply Blue (#661AEE). oklch(49.1% 0.277 286.5), rgb(100, 15, 241).
Aa
White text reads best on this color (7.29:1).
About this color
#640FF1 is a medium-dark, vivid purple. In OKLCH its lightness is 49%, its chroma 0.277 and its hue 286°. Its hue sits on the cool side of the wheel. The nearest named color is Purply Blue (#661AEE), ΔE 0.009 away. White text reads best on it, at 7.29:1.
| Hue family | Purples |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.277) |
| Temperature | cool |
| Nearest name | Purply Blue (#661AEE) |
| Black text | 2.88:1 |
| White text | 7.29:1 |
Values
| HEX | #640FF1 |
| RGB | rgb(100, 15, 241) |
| HSL | hsl(263, 89%, 50%) |
| OKLCH | oklch(49.1% 0.277 286.5) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #640FF1 | 7.29:1 | AAA | Lc -88.1 | Fine for body text |
| Black text on #640FF1 | 2.88:1 | Fails | Lc 21.0 | Dividers and decoration only |
| #640FF1 text on white | 7.29:1 | AAA | Lc 83.1 | Fine for body text |
| #640FF1 text on black | 2.88:1 | Fails | Lc -18.8 | Dividers and decoration only |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 700.
-
Step 50
50
#F4F4FF
oklch(97% 0.015 286.1)
-
Step 100
100
#E8E7FF
oklch(93.6% 0.032 287.7)
-
Step 200
200
#D5D4FF
oklch(88.5% 0.059 286.2)
-
Step 300
300
#BBB7FF
oklch(80.9% 0.101 286.5)
-
Step 400
400
#9A8EFF
oklch(70.6% 0.161 286.3)
-
Step 500
500
#856CFF
oklch(63.1% 0.209 286.6)
-
Step 600
600
#7341FF
oklch(55.6% 0.259 286.6)
-
Step 700
700 (this color)
#640FF1
oklch(49.1% 0.277 286.5)
-
Step 800
800
#5118C2
oklch(42.7% 0.229 286.7)
-
Step 900
900
#412199
oklch(37.6% 0.179 286.3)
-
Step 950
950
#26165A
oklch(27% 0.114 286.8)
#640FF1 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #005BF6 | 0.125 |
| Deuteranopia (no green cones) | #0050EE | 0.114 |
| Tritanopia (no blue cones) | #08638E | 0.225 |
| Achromatopsia (no color) | #565656 | 0.280 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #640FF1
#640FF1
oklch(49.1% 0.277 286.5)
- #686400
#686400
oklch(49.1% 0.105 107)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #640FF1, closest first.
No curated palette has a color within ΔE 0.04 of #640FF1.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purply Blue #661AEE ΔE 0.009
- Blue Purple #5A06EF ΔE 0.020
- Purpley Blue #5F34E7 ΔE 0.034
- Burple #6832E3 ΔE 0.037
- Purple Blue #5D21D0 ΔE 0.052
- Blurple #5539CC ΔE 0.068
- Violet Blue #510AC9 ΔE 0.073
- Light Royal Blue #3A2EFE ΔE 0.073
Use #640FF1 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.